1Plans closed to new workers or plans thatcease accruals for some or all plan participants.

3The categories are based on the averagewage for each occupation surveyed, which mayinclude workers with earnings both above andbelow the threshold. The average wages are basedon the estimates published in the "NationalCompensation Survey: Occupational Earnings inthe United States, 2010." See Technical Note formore details.

2The length of time is calculated based on theyear the plan was modified. For example, plansfrozen after January 2011 are included in the "1year" column. Those frozen between 2007 and2010 are included in the "2 to 5 year" column andplans frozen before 2007 are included in the"Greater than 5&nbs
p;years" column.

NOTE: Dash indicates no workers in this categoryor data did not meet publication criteria. Fordefinitions of major plans, key provisions, andrelated terms, see the "Glossary of EmployeeBenefit Terms" atwww.bls.gov/ncs/ebs/glossary20112012.htm.